Loading page
About this tool
Build complex WHERE conditions visually with AND/OR groups, IN and BETWEEN operators and ?, $n, :name or @name parameter markers.
This builder composes SQL WHERE clauses visually from AND/OR condition groups, covering all the standard predicates — comparisons, LIKE, IN lists, BETWEEN ranges and IS NULL checks — and parenthesising groups correctly because AND binds tighter than OR in every SQL engine. Values can be emitted as safely escaped inline literals or as bind parameters in ?, $1, :name or @name style to match JDBC, PostgreSQL, Oracle or SQL Server conventions. It is for developers and analysts assembling non-trivial filters without hand-balancing parentheses.
Open SQL WHERE Clause Builder on AltFTool — it loads instantly in your browser.
Paste your code or data sample into the workspace.
Pick the format, conversion, or analysis you need.
Copy the polished result straight back into your project.
Multi-condition OR groups are wrapped in parentheses automatically, so AND/OR mixing never changes meaning silently.
Inline literals, ?, $n, :name and @name markers cover SQLite, JDBC, PostgreSQL, Oracle and SQL Server.
Text values are escaped with SQL-standard '' doubling, and column names are validated before they are emitted.
AND binds tighter than OR, per the SQL standard and every major engine. So a = 1 OR b = 2 AND c = 3 means a = 1 OR (b = 2 AND c = 3). This builder parenthesises each group it generates, so the clause always means exactly what the visual grouping shows.
They are the same concept — bind parameters — in different dialects: ? is the positional marker used by JDBC, ODBC, SQLite and MySQL; $1, $2 are PostgreSQL's numbered parameters; :name is used by Oracle, SQLite and SQLAlchemy; and @name by SQL Server and BigQuery. Bind parameters keep values out of the SQL text, which prevents SQL injection.
Use BETWEEN: amount BETWEEN 100 AND 500 is equivalent to amount >= 100 AND amount <= 500 — the bounds are inclusive on both ends. For dates, be careful that BETWEEN '2026-01-01' AND '2026-01-31' excludes any time-of-day after midnight on the 31st when the column is a timestamp.
Because NULL is unknown, any comparison with it — even NULL = NULL — evaluates to unknown rather than true. The SQL standard provides IS NULL and IS NOT NULL predicates for null tests, which is why this builder offers them as distinct operators that take no value.